10012201021 has 2 divisors, whose sum is σ = 10012201022. Its totient is φ = 10012201020.

The previous prime is 10012201013. The next prime is 10012201033. The reversal of 10012201021 is 12010221001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9874396900 + 137804121 = 99370^2 + 11739^2 .

It is a cyclic number.

It is not a de Polignac number, because 10012201021 - 2³ = 10012201013 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 10012200989 and 10012201007.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10012201321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5006100510 + 5006100511.

It is an arithmetic number, because the mean of its divisors is an integer number (5006100511).

Almost surely, 2^10012201021 is an apocalyptic number.

It is an amenable number.

10012201021 is a deficient number, since it is larger than the sum of its proper divisors (1).

10012201021 is an equidigital number, since it uses as much as digits as its factorization.

10012201021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 10012201021 its reverse (12010221001), we get a palindrome (22022422022).

It can be divided in two parts, 1001 and 2201021, that added together give a palindrome (2202022).

The spelling of 10012201021 in words is "ten billion, twelve million, two hundred one thousand, twenty-one".